Re: [PATCH v5 0/9] tests/functional: Adapt reverse_debugging to run w/o Avocado

[Thomas Huth <thuth@redhat.com>]

  Hi Gustavo!

On 03/10/2025 17.07, Gustavo Romero wrote:
> Hi Thomas,
> 
> On 10/3/25 11:38, Gustavo Romero wrote:
>> Hi Thomas,
>>
>> On 10/3/25 10:30, Gustavo Romero wrote:
>>> Hi Thomas,
>>>
>>> On 10/2/25 14:52, Thomas Huth wrote:
>>>> On 02/10/2025 18.53, Thomas Huth wrote:
>>>>> On 02/10/2025 04.04, Gustavo Romero wrote:
>>>>>> The goal of this series is to remove Avocado as a dependency for running
>>>>>> the reverse_debugging functional test.
>>>>>>
>>>>>> After several rounds of discussions about v1 and v2, and experiments
>>>>>> done by Daniel and Thomas (thanks for all the experiments and comments
>>>>>> so far), I've taken a new approach and moved away from using a runner
>>>>>> for GDB. The changes, I believe, are much simpler now.
>>>>>
>>>>>   Hi Gustavo,
>>>>>
>>>>> unfortunately, this still seems to be broken on Fedora. After applying 
>>>>> your series, I get:
>>>>>
>>>>> stderr:
>>>>> Traceback (most recent call last):
>>>>>    File "/home/thuth/devel/qemu/tests/functional/reverse_debugging.py", 
>>>>> line 100, in reverse_debugging
>>>>>      self.reverse_debugging_run(vm, port, gdb_arch, last_icount)
>>>>>      ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>>>>    File "/usr/lib64/python3.13/unittest/case.py", line 156, in 
>>>>> skip_wrapper
>>>>>      raise SkipTest(reason)
>>>>> unittest.case.SkipTest: Missing env var(s): QEMU_TEST_GDB
>>>>
>>>> Looks like it's required to explicitly use the --gdb=... parameter of 
>>>> configure to make it work, and it does not work without that paramter? 
>>>> Could you please have a look whether it works without --gdb with the 
>>>> auto-detected gdb for you?
...
> I've just tried it on Fedora 42 and GDB is correctly detected:
> 
> $ ../configure --target-list=aarch64-softmmu --disable-docs
 > $ make -j check-functional-aarch64

I just tried it again, and it just seems to be broken in my build folder 
where I do incremental builds. It works when I build QEMU in a new folder 
from scratch - quite weird.

> I have installed:
> 
> gromero@gromero13:~/git/qemu/build$ dnf info gdb
> Updating and loading repositories:
> Repositories loaded.
> Installed packages
> Name            : gdb
> Epoch           : 0
> Version         : 16.3
> Release         : 1.fc42
> Architecture    : x86_64
> Installed size  : 455.3 KiB
> Source          : gdb-16.3-1.fc42.src.rpm

I've got the very same package installed here.

>> Are you sure GDB is installed in your test env?
>>
>> Do mind checking if:
>>
>> gromero@gromero0:/mnt/git/qemu_$ gdb_bin=$(command -v "gdb-multiarch" || 
>> command -v "gdb")
>> gromero@gromero0:/mnt/git/qemu_$ echo $gdb_bin
>> /usr/bin/gdb
>>
>> works in your env and if QEMU_TEST_GDB is in:
>>
>> $ ./pyvenv/bin/meson test  --verbose --no-rebuild -t 1 --setup thorough  
>> --suite func-thorough  func-aarch64-reverse_debug
>>
>> output?

$ echo $gdb_bin
/usr/bin/gdb

  Thomas